Seminario di algebra e geometria
ore
11:00
presso - Aula Da Stabilire -
We construct a combinatorial abstraction of the Leray spectral sequence associated with the De Concini—Procesi compactification of a complex hyperplane arrangement complement. We show that its homological properties
generalise the ones that we expect from topology in the realizable case. Geometric and Hodge-theoretic arguments are replaced by combinatorial blowups, Groebner bases, and sheaves on posets.